Universal joint.



R. JANNEY. UNIVERSAL JOINT.

. APPLICATION FILED SEPT. 19, 1912 7 1,1 1 9,608. Patented Dec. 1, 1914.

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witnesses. Inventor"- fieymlddanmg fly fills-Attorneys;

R. JANNEY. UNIVERSAL JOINT.

APPLICATION FILED SEPT. 19, 1912.

1,1 1 9,608; Patented Dec. 1,1914.

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fieyrw'd'ciknwey v R. JANNEY. UNIVERSAL JOINT.

APPLIQATION FILED SEPT. 19, 1912.

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UNITED STATES PATENT orricn.

REQTNOLD JANNEY, OF NEW YORK, N. Y., ASSIGNOR TO THE WATERBURY TOOL COM-IPANY, OF NEW BRITAZIIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

UNIVERSAL JOINT.

Specification of Letters Patent.

Patented Dec. 1, 1914.

- To all whom it may concern Be it known that I, REYNOLD J ANNEY, acitizen of the United States, residing at New York, in the county of NewYork and State of New York, have invented certain new and usefulImprovements in Universal Joints, of which the following is aspecification.

This invention relates to universal joints among the objects of theinventionbeing the provision of an article of this character whichis-strong, compact, and effective in action;

The device possesses other features of advantage and novelty which withthe foregoing will be stated at length in the following descriptionwherein I will set forth in detail that one of the several convenientforms of embodiment of the invention which I have selected forillustration in the drawings accompanying and forming part of thepresent specification, this disclosure being provided to enable thoseskilled in the art to practice the invention. From this it will be clearthat I do not restrict myself to said disclosure; I may depart therefromin several respects within the scope of the invention definedby myclaiins. h Referring to said drawings: F igure 1 is a vertical sectionalview of a universal oint .involving my invention. Fig. 2 is a similarview with the parts in different positions. F ig. 3 is a horizontalsection of said joint, and, Fig. 4: is a cross section of the same. Fig.5 is a transverse section in a plane through the lower of therectangular bushing blocks shown in Fig. 4.

Like characters refer to like parts throughout the several views.

The joint comprises in its make up a shaft, a ring surrounding saidshaft, and a cruciform coupling member for operatingly uniting the twoparts. Saidshaft is preferably rotative-about a fixed axis while thering is rotative with the shaft being preferably supported byindependent bearing means which may be of any suitable nature. As willhereinafter appear the ring shown in the drawings in addition to itsrotary movement is tiltable or oscillatory, but this is not necessary inall cases. a

A shaft such as meets my requirements is that denoted by 2 which asrepresented, is provided with a closed yoke 3 between the ends thereof;this yoke is not always essential (although advantageous), in that othermeans may be provided for sustaining two opposite trunnions of acruciform member,

two of its opposite trunnions supported by the shaft 2, the other twoopposite trunnions thereof being sustained by the ring 5. Said cruc formcoupling member 4 as illustrated, consists of two transversely disposedparts 6 and 7,, the part 6 having a substantially central portion(constituting the body of said coupling member), from which extendoppositely the approximately duplicate trunnions 8 pivotally supportedwithin the ring 5 as will hereinafter appear. There is shown driventhrough. the substantially central portion of the part 6, the part 7shown as consisting of a cylindrical pin, the terminal portions of whichpresent two opposite trunnions rotatively supported by the sides of theyoke 3. Said sides have openings to receive the bushings 9 in which arefitted the terminal or trunnion portions of the member or pin 7, beingrepresented as rigidly held in place by the pins 10. The

' two parts 6 and 7 of the coupling member i are held securely togetherby the rivet 11 extending through registering holes there- 7 videdinternally thereof, with inwardly-ex I tending projections 13 disposedin approxi-' mately diametrically opposite pairs, a bushing block 14being situated between each pair of projections. nally rectangular, andtheir opposite sides Said blocks are extenfit against the flat walls ofsaid projections to, thus key said bushing blocks in place. To furtherprevent movement ofsaid bushing blocks the screws 15, of which there.are four, may be provided, each screw being threaded partly into aprojection and partly into a bushing block by reason of which motion ofsaid blocks in all directions is prevented. Said bushing blocks arecylindrically bored to receive for oscillation the trunnions of the part6 as-already described.

On reference to Fig. 4 it will be perceived that there are intervals orclearance spaces between the body portion of the coupling member or.trunnion bloclrt and the sides of the yoke 3 and that there arepractically similar spaces between said body portions and the bushingblocks 1 1- which is one simple way of securing a prime advantage towhich 1 will hereinafter refer. ltis assumed that the axis of rotationof the shaft 2- coincides with the axis of rotation of the ring 5 butfrom a variety of causes such for instance as an error in workmanship orbe cause of wear or changes in position due to stress, this is notalways so. in view of the clearance or relief spaces to which 1 havereferred, it provide for a comparatively slight amount of relativelateral motion of the shaft 2and ring 5, so that notwithstanding thefact that their axes be out of coincidence, accurate operation of thejoint will follow. it will be evident therefore that when l state thatthe shaft 2 rotates about a fixed axis 1 mean that said axis is rigid,al-

. though it may be slightly moved, the same applying to the ring 5. Inany event the deviation of the shaft or the ring from its normal axis isat best, very slight but as will be clearl have provided for the same 1without any ill effects following.

As already set forth the ring 5 is rotary.

In the construction described it has in addition a swinging oroscillatory movement being supported for this purpose by what is known.as a tilting box "16 which constitutes a convenient means for suchpurpose although one of a radically difllerent hind might be employedinstead; in fact the hearing for the said ring could be stationary. Thistilting box is a common device in a hydraulic variable speed gear, andit has several positions, being usually movable oppositely from itsneutral or zero position by hand. As the purpose of such a-device issowell known it is needless for me to describe the same. Said tilting boxis shown consisting of a shell supported for oscillation by the 'pivots'16 and the means illustrated for operating said tilting box are a screwand a nut as will hereinafter appearfln'the organization shown the axisof oscillation of said tilting box is practically coincident with thelongitudinal axis of the pin '3.

When the ring 5 is used connection with a tilting box it is adapted forconnection with the pistons ofsuch a hydraulic variable speed gear, sothat said speed gear can be brought to a state of rest or its speedregulated, and necessary changes in direc- -tion.*accomplished, by themovementof the tilting box to aneutral position or to positions oppositesaid neutral position, it being lents, forming no part of the presentinvention, are not herein illustrated; their stems may be connected withthe ring in any one of several difi'erent Ways. pointed out is merelyone use to which thering 5 orits'equivalent can be put.

The ring 5 is shown having on its rear side the annular rabbet or groove17 and in the same is fitted the bearing ring 18. The ring 19 surroundsthe ring 18 and is supported in the tilting box 16, and between theopposite faces or races of the two rings 18 and 19 are interposedanti-friction rollers 20 held in a cage 21, said rollers20 beingprovided to take upside or diagonal thrust. The rollers 22 take up endthrust being as shown of conical or tapering construction,

and being adapted to bear against inclined faces or races on the ring 18already described and on the ring 23 set into. a rabbet or groove in therear portion of the tilting shown provided with outwardly extendingjournals 27 pivotally fitting bearing openings in the'duplicate blocks28 disposed for sliding movement in longitudinally-extending slots inthe arms 29 projecting rearwardly from the tilting box. By the -operation therefore of said screw tne tilting box can be moved oppositelyfrom its neutral position standing when in said neutral positionapproximately perpendicularly. It will be understood that as the tiltingbox 16 is adjusted angularly the ring 5 is similarly adjusted. Thetrunnion block or cruciform coupling member a connectsthe' shaft 2 andring 5 for relative universal movement and also provides a means wherebysaid ring can be supported independently of said shaft, the tilting box'16 constituting conveniently such an independent support.

What 1 claim is:

1. The combination of a ring having interiorly thereof projectionsarranged in dia-' The illustration 1,11o,eosgt teriorly thereofprojections arranged in diametrically opposite pairs, rectangularbushing blocks situated respectively between each pair of projections,the inner faces of blocks from rotating, a shaft extending througlnandhaving a closed yoke Within, said ring, and a cruciform trunnion member,two opposite trunnions of which are pivotally fitted in said bushingblocks, and the other two opposite trunnions of which are pivotallyfitted in the branches of said yoke,

and means for keying said bushing blocks in position. c 15 In testimonywhereof I afix my signature in presence of two witnesses.

REYNOLD JANNEY.

Witnesses:

HEATH SUTHERLAND, F. E. ANDERSON.

Copies of this natent may be obtained for five cents each, by addressingthe Commissioner of latents, Washington, D. C.

